CrucialCT275MX300SSD1
SanDiskSDSSDXPS-240G

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC. Release date: Q2 2016.

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

Real World Speed
Performance profile from 24,311 user samples
18,946 User Benchmarks
Best Bench: 94% 256GB free
Worst Bench: 59% 205GB free (System drive)
Poor: 59% Great: 94%
SPEED RANK: 334th / 956
5,365 User Benchmarks
Best Bench: 113% 202GB free
Worst Bench: 60% 46GB free (System drive)
Poor: 60% Great: 113%
SPEED RANK: 192nd / 956
Effective Speed
Effective SSD Speed
80 % 90.7 % Slightly faster effective speed.
+13%
Read
Avg. Sequential Read Speed
430 MB/s 465 MB/s Slightly faster read speed.
+8%
Write
Avg. Sequential Write Speed
387 MB/s 417 MB/s Slightly faster write speed.
+8%
4K Read
Avg. 4K Random Read Speed
24 MB/s 27.9 MB/s Faster random read.
+16%
4K Write
Avg. 4K Random Write Speed
88.9 MB/s Faster random write.
+17%
76.2 MB/s
Mixed
Avg. Sequential Mixed IO Speed
342 MB/s Slightly faster mixed IO speed.
+12%
306 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
34.3 MB/s Slightly faster random mixed IO.
+13%
30.4 MB/s
SusWrite
Avg. Sustained Write Speed
215 MB/s 365 MB/s Much faster sustained write speed.
+70%
Read
Peak Sequential Read Speed
470 MB/s 514 MB/s Slightly faster peak read speed.
+9%
Write
Peak Sequential Write Speed
476 MB/s 486 MB/s +2%
4K Read
Peak 4K Random Read Speed
28.5 MB/s 36.3 MB/s Faster peak random read.
+27%
4K Write
Peak 4K Random Write Speed
122 MB/s +4% 117 MB/s
Mixed
Peak Sequential Mixed IO Speed
400 MB/s 479 MB/s Faster peak mixed IO speed.
+20%
4K Mixed
Peak 4K Random Mixed IO Speed
41.7 MB/s 43 MB/s +3%
SusWrite
Peak Sequential Sustained Write 60s Average
262 MB/s 470 MB/s Much faster peak sustained write speed.
+79%
Market Share
Based on 8,543,104 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.39 % Hugely higher market share.
+875%
0.04 %
Value
Value For Money
93.2 % 101 % Slightly better value.
+8%
User Rating
UBM User Rating
66 % +3% 64 %
Price
Price (score)
$85 $79 Slightly cheaper.
+7%
Age
Newest
27 Months Much more recent.
+47%
51 Months
DQ Read
Peak 4K-64Thread Read Speed
236 MB/s 378 MB/s Much faster peak deep queue read.
+60%
DQ Write
Peak 4K-64Thread Write Speed
326 MB/s 340 MB/s +4%
AS-SSD Total
AS-SSD Total Score
977 Pts 1,221 Pts Stronger server IO.
+25%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
307 MB/s Hugely faster peak deep queue mixed IO.
+86%
165 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
211 MB/s 279 MB/s Much faster deep queue read.
+32%
ADQ Write
Avg. 4K-64Thread Write Speed
262 MB/s +3% 255 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
248 MB/s Hugely faster deep queue mixed IO.
+110%
118 MB/s
Capacity
Capacity
275GB 240GB
ADVERTISEMENT

The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]

MORE DETAILS

The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) September 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

ADVERTISEMENT

Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $370Nvidia GTX 1070 $344Samsung 850 Evo 250GB $86
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $114
Intel Core i5-8600K $260AMD RX 480 $280Samsung 850 Pro 256GB $135
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $150SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $899SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $33Corsair Vengeance LPX DDR4 3200 C16 2x8GB $160SanDisk Ultra Fit 32GB $11
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback